Volume 79, Number 2, July 2007
Article Number 27002
Number of page(s) 4
Section Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties
Published online 28 June 2007
EPL, 79 (2007) 27002
DOI: 10.1209/0295-5075/79/27002

Non-linear electromagnetic response of graphene

S. A. Mikhailov

Institute for Physics, University of Augsburg - D-86135 Augsburg, Germany

received 27 April 2007; accepted in final form 4 June 2007; published July 2007
published online 28 June 2007

It is shown that the massless energy spectrum of electrons and holes in graphene leads to the strongly non-linear electromagnetic response of this system. We predict that the graphene layer, irradiated by electromagnetic waves, emits radiation at higher frequency harmonics and can work as a frequency multiplier. The operating frequency of the graphene frequency multiplier can lie in a broad range from microwaves to the infrared.

73.50.Fq - High-field and nonlinear effects.
81.05.Uw - Carbon, diamond, graphite.
78.67.-n - Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures.

© Europhysics Letters Association 2007